U.S. Police Shooting Death of Unarmed Black Teenager Sparks Riots

A police shooting that resulted in the death of an unarmed black teenager has sparked protests and rioting in the U.S. state of Missouri.

At least 32 people were arrested after Sunday night's unrest near the town of Ferguson, a suburb of St. Louis.

Officials say they will face charges for various offences including assault, burglary and theft.

The violence broke out after demonstrators gathered for a vigil near the site of the shooting.

Television footage shows a crowd of protesters confronting a line of riot police. Later, as the initial demonstration dissipated, rioters were seen looting stores and setting fire to a gas station.

Ferguson Mayor James Knowles called for calm and promised a thorough and impartial investigation by local officials. The Federal Bureau of Investigation says it will launch a separate investigation into the incident as well.

Michael Brown, 18, was killed on Saturday during an encounter with a police officer. The details remain unclear.

Local media says the case has highlighted tensions between the mainly black suburb of Ferguson and the majority white police force.